Locomotive.



YPATENTED DEG..5,1905.

. PAGET.

LOGOMOTIVB. APPLICATION FILED SEPT. l, 1905.

' STATES eA -nm OFFICE.

' CECIL WALTER'PAGET, or SUTTON BONNINGTON, ENGLAND.

LOCOM'OTIVE.

To all whom it may concern:

Be it known that I; OEOIL WALTER Prism,

- engineer, a subject of the King of Great Britain, residing at'Sutton Bonnington, Loughborough, England, have invented certain'new and useful Improvements in Locomotives, of

which the following isa specification.

According to this invention the locomotive has three crank-axles, each havmg four cranks and eight single-acting steam-cylinders con' nected in pairs, two pairs being between each outer axle-and the-middle axle. The cylin-f ders of each pair are not in line with each other, but their inner ends communicate. The four cranks ofthe middle axle are connected byrods to pistons working in four of the cylinders, one of each pair.

- tons are respectively connected by rods to two approximately balance each other.

of thecranks of each of the outer axles. The two remaining cranks'of each of. the outer. axles are connected by rods. to pistons in the other cylinders of the four above-mentioned By this arrange pairs of steam-cylinders. ment the three axles are coupled together,

and side coupling-rods a'reyrendered unnecessary. The moving parts of the engine also Steamiis admitted to the steam-cylinders by rotary valves and is exhausted from them through but not in line.

ports uncovered by the pistons.

Figure 1 is a vertical section, andFig. 2 a horizontal section, of part-of a locomotive engine constructed as above described.

1, 2, 3 are the three crank-axles, each hav? 'ing four cranks.

4, 5, 6, 7 are four pairs ofsingle-acting cylinders, with the'two cylinders in each pair back to back and openingone into the other,

The pistons of the two innermost cylinders of the pairs 4 5 are connected by rods with two opposite cranks on the crank-shaft 1. Similarly, the piston of one of the cylinders of eachof the pairs '6 7 is coupled by a rod to one of the cranks of the shaft 3; The pistons of the other cylinders of the four pairs are connected by rods with four cranks on the central crank-shaft 2.

- The pistons of these latter cylinders also have rods 8 9 extending from them through stufling- Specification of Letters Patent. 1 Application filed September I 1905 Serial No. 276,727-

Patented Dec. 5', 1905.

shafts 1 and 33. Preferably this is effected as above described and as is shown in the drawings by the rods being connected by open frames 11 12 to sliding blocks or. pistons 13 14.,

which workto and fro in cylindrical guides 15' 16, and by the sliding blocks being coupled by connecting-rods tothe cranks; but it might be effected in other ways. The two outermost cranks on the shaft 2 are opposite to one another and at rightangles to the two innermost cranks. I r

17 represents rotating valves forcontrolling the admission of steam to the pairs of cylinders. One. 'such valve is, as partially-shown, arranged to control the supply of-steam to two pairs of cylinders. ,The valves are revolved continuously. Steam is supplied to the'hollowinter'ior of each rotating valve by the steam-supply pipes Y18 and passes out from itthrough asingle slit, which ,by the rotation of the valve is first brought opposite to-a port leading to one cylinder and afterward oppo-v site to a port leading to another cylinder. In the drawings they are shown to'be driven by a bevel-wheel 19, fast with them, gearing into a corresponding pinion on a shaft 20, driven by chain and chain-wheel gear from one of the axles. Y

For reversing the engine provision is alsomade for enabling a partial turn to be given to the valve to alter its position relatively to the position of the cranks on the crankshafts.

In the arrangement shownin the drawings this is efiected by employing two pinions 21, gearing together and one gearing with atoothed wheel 22,-driven by a corresponding wheel which isfastwith the chain-wheel driven by the endless chain, and the other with a wheel 23on the sconcentric shaft 20. By shifting the pinions 21 around .the wheels 22 23 the .valve canhave a partial turn given to it without shifting the crank-shafts. This shifting of the pinions around the wheel can be effectcut-off of steam admission can also be varied by giving a partial turn to a sleeve which surrounds such revolving. valve. The sleeves can have this partial turn given to them by arms extending from them, being coupled to a rod which extends back to the foot-plate of the engine.

28 represents cut-off valves for controlling the admission of steam to the rotating valves 17 from the steam-supply pipes 29.

What I claim is- 1. The combination of three parallel crankaxles, cylinders in the spaces between them,

pistons working in the cylinders and connections from the pistons to the cranks on the crank-axles, the pistons of the cylinders in the space between the central and one outside axle driving cranks on these axles and those in the space between the central and other outside axle driving other cranks on these axles, so that all three crank-axles are coupled without the use of outside connecting-rods.

2. The combination of three parallel crankaxles, cylinders in the spaces between them, pistons working in the cylinders and connections from the pistons to the cranks on the crank-axles, the pistons of the cylinders in the space between the central and one outside axle driving cranks on these axles and those in the space betweenthe central and other outside axle driving other cranks on these axles, and with the cranks driven by the pistons of one set of cylinders at right angles to the cranks driven by the pistons of the other set;

3. The combinationof three parallel crankaxles each having four cranks upon it, two pairs ofsingle-acting cylinders set back to back situated in each of the spaces between the axles, the pistons of one cylinder of each pair in one space coupled by connecting-rods to opposite cranks on the central axle, rods led back from these pistons through stuflingboxes, means for driving opposite cranks on the adjacent outer axle from these rods and connecting-rods coupling the pistons-of the other two cylinders to opposite cranks on this outer axle.

4. The combination of three parallel crankaxles each having four cranks upon it, two pairs of single-acting cylinders set back to back situated in each of the spaces between the axles, the pistons of one cylinder of each pair in one space coupled by connecting-rods to opposite cranks on the central axle, rods led back from these pistons through stufiing boxes, means for driving opposite cranks on the adjacent outer axle from these rods and connecting-rods coupling the pistons of the other two cylinders to opposite cranks on this outer axle, and the cranks driven by the pistons of the two pairs of cylinders in one space at right angles to those driven by the pistons of the cylinders in the other space.

5. The combination of three parallel crankaxles each having four cranks upon it, two pairs of single-acting cylinders set back to back situated in each of the spaces between the axles, the pistons of one cylinder of each pair in one space coupled by connecting-rods to opposite cranks on the central axle, rods led back from these pistons through stuflingboxes, means for driving opposite cranks on the adjacent outer axle from these rods and connecting-rods coupling the pistons of the other two cylinders to opposite cranks on this outer axle, and rotary valves driven from and at the same speed as the crank-axles for admitting steam at one time to the two cylinders of one pair and at another time to the two cylinders of the other pair.

6. The combination of three parallel crankaxles each having four cranks upon it, two pairs of single-acting cylinders set back to back situated in each of the spaces between the axles, the pistons of one cylinder of each pair in one space coupled by connecting-rods to opposite cranks on the central axle, rods led back from these pistons through stuflingboxes, means for driving opposite cranks on the adjacent outer axle from these rods and connecting-rods coupling the pistons of the other two cylinders to oppositecranks on this outer axle, rotary valves driven'from and at the same speed as the crank-axles for admitting steam at one time to the two cylinders of one pair and at another time to the two cylinders of the other pair, and exhaust-ports in the sides of'the cylinders uncovered by the pistons at the end of their outstrokes for effecting the exhaust.

CECIL WALTER PAGET.

Witnesses:

C. K. EDDOWES, F. A. RoLLAsoN. 

